Electric display



F. STODDARDJ ELECTRIC DISPLAY. A l

APPLICATION HLED APR. 14,1920. 1,378,495. Pate May 17, 1921.-

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Patentd May 17,1921.

2 SHEETS-SHEET 2.

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,1 6, 9 6 f v07 7/ 32/ I! ATTORNEYS UNITED STATES.

PATENT OFFICE.

RAY F. ,STODDARD, OF DAYTON, OHIO.

ELECTRIC DISPLAY.

Application filed April 14, 1920. Serial No. 373,777.

To all whom it may concern:

Be it known that I, RAY FRANK S'roD- 'DARD, a citizen of the UnitedStates, residing at Dayton, in the county of Montgomery and the State ofOhio, have invented a new and useful Electric Display, of which thefollowing is a specification.

My invention relates to an electric display using incandescent lamps orother illuminating elements.

The object of this invention is to display letters, cartoons, or, if acertain display of this type were large enough it could have picturesworked out by lighting certain of the lamps. Y

The spacing of the lamps-as hereafter described-makes a compact displaysurface and by using hexagonally shaped cups, di vides the light of onecertain section of the surface from another which possibly should bedark.

The object of this type cup or lamp-box is to have one type that isinterfitting and which is seemingly circular and which allows the lampsto be equally spaced.

By using lamps of a desirable spacing, where a central lamp issurrounded by six lamps, each lamp being equally spaced, and connectedto relatively spaced contacts in one or a plurality of contact blocks.

In the accompanying drawings Figure 1,

; Sheet 1, represents the display and a con tact block, which controlsit.

I have instituted a strip of metal or suit able substance to divide thelight of the several lamps and'to confine it to a certain area. The cupstrip 1, showsthe means of grouping the said strips around the lamps toform hexagonally shaped cups.

One side of each lamp is connected to a relatively spaced contact in acontrol block 3, wires being protected by pipe 2, while all of the otherlamp contacts may be connected to wire 4, constantly.

Fig. 2, shows a means of finding the correct spacing of lamps on center,which is done by stepping off the radius of a circle around itscircumference. This spacing provides the crossing of the largest numberof lamp lines at a central point than any other which are at degreeswhen having solid lines of lamps in use; but when every other lamp instraight lines are used this spacing central point, etc.

I Specification of Letters Patent. 7 Pate t d M 17 1921 In Sheet 2, Fig.1, represents a display I with the u nshaded portion representing lampsillumlnatlng the interior of certain cups. On the left is theword The,vertically spelled, the outline of the moon J 7 is in the center and onthe right is an interrogation mark.

A wire of neutral polarity is shown connecting one side of all thelamps.

In Fig. 2, No.1, represents a conduit contalnlngall of the wires fromthe individual lamps to the relatively spaced contacts N0. 2.

A sheet of paper or other insulating material is shown by No. 3, whileNo. 4, shows the contacts which protrude through the varlousperforations in the insulating sheet and make the electrical connectionbetween the positive wire and the lamps.

Ifig. 3, shows the contact No. 1, No. 2, the spring formlng the tensionandallowing the contact to actuate it may also be used as, a conductorby having the container made of insulating material, in which case aplate would be required across the back of all the contact chambers N0.3, being the plate.

Flg. 4, represents a front view ofthe perfor-atedinsulation sheetthrough which the connections are made by the contacts.

As I have fully described the workings of my device I make the followingclaims for Letters Patent to be granted on In an electric display, lampsor groups In testimony whereof I aflix my signature in the presence oftwowitnesses.

RAY FJSTODDARD.

Witnesses: i

HARRY GEBHAR'I, i E. A. Woonwm.

